TWI412675B - - Google Patents

Info

Publication number
TWI412675B
TWI412675B TW099124409A TW99124409A TWI412675B TW I412675 B TWI412675 B TW I412675B TW 099124409 A TW099124409 A TW 099124409A TW 99124409 A TW99124409 A TW 99124409A TW I412675 B TWI412675 B TW I412675B
Authority
TW
Taiwan
Prior art keywords
ring
magnetic
seal
shaft
gap
Prior art date
Application number
TW099124409A
Other languages
Chinese (zh)
Other versions
TW201204965A (en
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to TW099124409A priority Critical patent/TW201204965A/en
Priority to US12/882,262 priority patent/US8366116B2/en
Publication of TW201204965A publication Critical patent/TW201204965A/en
Application granted granted Critical
Publication of TWI412675B publication Critical patent/TWI412675B/zh

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/08—Sealings
    • F04D29/10—Shaft sealings
    • F04D29/102—Shaft sealings especially adapted for elastic fluid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/08—Sealings
    • F04D29/10—Shaft sealings
    • F04D29/106—Shaft sealings especially adapted for liquid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/002—Sealings comprising at least two sealings in succession
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/16—Sealings between relatively-moving surfaces
    • F16J15/34—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member
    • F16J15/3464—Mounting of the seal
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/16—Sealings between relatively-moving surfaces
    • F16J15/40—Sealings between relatively-moving surfaces by means of fluid
    • F16J15/43—Sealings between relatively-moving surfaces by means of fluid kept in sealing position by magnetic force

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
  • Sealing With Elastic Sealing Lips (AREA)

Abstract

A shaft-sealing device includes an outer ring for receiving a shaft sleeve to rotate therewith. A magnetic-field generating unit is mounted the around rotary shaft and includes inner and outer magnetic rings. The outer magnetic ring is mounted in the outer ring. A gap is defined between an inner periphery of the outer magnetic ring and an outer periphery of the inner magnetic ring and is filled with a magnetic liquid. One or both of the inner and outer magnetic rings provide magnetic force to retain the magnetic liquid in the gap. A seal ring is mounted between the outer magnetic ring and an end of the outer ring. A lip extends from an inner periphery of the seal ring toward or away from the end of the outer ring and is at a non-parallel angle to a radial direction of the seal ring to form a seal around the rotary shaft.
TW099124409A 2010-07-23 2010-07-23 Sealing device TW201204965A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
TW099124409A TW201204965A (en) 2010-07-23 2010-07-23 Sealing device
US12/882,262 US8366116B2 (en) 2010-07-23 2010-09-15 Shaft-sealing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
TW099124409A TW201204965A (en) 2010-07-23 2010-07-23 Sealing device

Publications (2)

Publication Number Publication Date
TW201204965A TW201204965A (en) 2012-02-01
TWI412675B true TWI412675B (en) 2013-10-21

Family

ID=45493766

Family Applications (1)

Application Number Title Priority Date Filing Date
TW099124409A TW201204965A (en) 2010-07-23 2010-07-23 Sealing device

Country Status (2)

Country Link
US (1) US8366116B2 (en)
TW (1) TW201204965A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI671482B (en) * 2015-07-15 2019-09-11 日商霓塔股份有限公司 Industrial seals and seals

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TW201204966A (en) 2010-07-23 2012-02-01 qi-yun Gong Magnetic fluid sealing device
PL238837B1 (en) * 2019-03-20 2021-10-11 Politechnika Swietokrzyska Mechanical end-face seal
CN110296928B (en) * 2019-07-19 2022-04-08 三峡大学 Device and method for simulating visual fracture seepage by using magnetofluid
TWI742765B (en) * 2020-07-16 2021-10-11 龔祺允 Inflatable seal
RU203534U1 (en) * 2020-10-19 2021-04-08 Денис Юрьевич Палин COMBINED MAGNETIC FLUID SHAFT SEAL
CN114110170B (en) * 2021-10-26 2022-09-20 清华大学 Floating type magnetic liquid sealing device

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4252328A (en) * 1980-05-01 1981-02-24 Ferrofluidics Corporation Self-activating ferrofluid seal and method
US4357022A (en) * 1980-11-19 1982-11-02 Ferrofluidics Corporation Ferrofluid rotary-shaft seal apparatus and method
US4527802A (en) * 1983-03-21 1985-07-09 Mechanical Technology Incorporated Integral magnetic fluid centrifugal high speed gas seal and method
US4605233A (en) * 1982-09-16 1986-08-12 Rigaku Keisoku Kabushiki Kaisha Magnetic fluid sealing device
US4671679A (en) * 1986-05-05 1987-06-09 Mechanical Technology Incorporated Magnetic fluid devices such as magnetic fluid bearings, seals, and the like and an automatic magnetic fluid supply control system therefor
US4830384A (en) * 1987-06-29 1989-05-16 Ferrofluidics Corporation Compact long-life magnetic fluid seal
US5009436A (en) * 1988-07-11 1991-04-23 Nippon Densan Corporation Magnetic fluid seal assembly
US5118118A (en) * 1988-08-02 1992-06-02 Skf Industrial Trading And Development Company B.V. Sealing assembly with a magnetic liquid

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59129699A (en) * 1983-01-15 1984-07-26 三菱重工業株式会社 Corrugated cardboard slitter
US5047392A (en) * 1989-03-21 1991-09-10 Troy Investments Inc. Diamagnetic colloids based seals
US5954342A (en) * 1997-04-25 1999-09-21 Mfs Technology Ltd Magnetic fluid seal apparatus for a rotary shaft
CN1297766C (en) * 2000-10-12 2007-01-31 Nok株式会社 Magnetic fluid seal device
WO2002095271A1 (en) * 2001-05-22 2002-11-28 Nok Corporation Magnetic fluid seal device
US6805358B2 (en) * 2001-08-16 2004-10-19 Isomag Corporation Magnetic seal
US7188840B2 (en) * 2003-07-07 2007-03-13 Zhixin Li Magnetic fluidic seal with improved pressure capacity

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4252328A (en) * 1980-05-01 1981-02-24 Ferrofluidics Corporation Self-activating ferrofluid seal and method
US4357022A (en) * 1980-11-19 1982-11-02 Ferrofluidics Corporation Ferrofluid rotary-shaft seal apparatus and method
US4605233A (en) * 1982-09-16 1986-08-12 Rigaku Keisoku Kabushiki Kaisha Magnetic fluid sealing device
US4527802A (en) * 1983-03-21 1985-07-09 Mechanical Technology Incorporated Integral magnetic fluid centrifugal high speed gas seal and method
US4671679A (en) * 1986-05-05 1987-06-09 Mechanical Technology Incorporated Magnetic fluid devices such as magnetic fluid bearings, seals, and the like and an automatic magnetic fluid supply control system therefor
US4830384A (en) * 1987-06-29 1989-05-16 Ferrofluidics Corporation Compact long-life magnetic fluid seal
US5009436A (en) * 1988-07-11 1991-04-23 Nippon Densan Corporation Magnetic fluid seal assembly
US5118118A (en) * 1988-08-02 1992-06-02 Skf Industrial Trading And Development Company B.V. Sealing assembly with a magnetic liquid

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI671482B (en) * 2015-07-15 2019-09-11 日商霓塔股份有限公司 Industrial seals and seals

Also Published As

Publication number Publication date
US8366116B2 (en) 2013-02-05
TW201204965A (en) 2012-02-01
US20120020785A1 (en) 2012-01-26

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Legal Events

Date Code Title Description
MM4A Annulment or lapse of patent due to non-payment of fees